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In the development of the class of natural-technical systems (NTS) “Natural Environment-Object of Activity-Population” (“NE-OA-P”) on the use of water resources in the multifaceted types of economic and other activities, giving the results of theoretical studies of a specialized type “NTS” in where the component “PS” means the natural water environment (NWE) of a water body as a source of the multi-purpose water supply system (MWS) of the objects of urban households, settlements, enterprises of the fuel and energy complex (TPP, HES, NPP); Under the “OA” water intake technological complex (WITC) is considered, which includes various for the functional purpose of hydraulic structures (HS) and devices for ensuring the selection of estimated water flow (Qm3/s) with an environmentally safe level of protection of the water environment of the water body in the zones of influence of the WITC and the functional work of the treatment facilities in the composition of the MWS; under the component "P is considered MWS that provides water of normative quality to specific water consumers and water users. The methodological basis in creation of new type NTS “NWE - WITC -MWS” considers the system analysis and the approach which is based on concept of “System”. The methodology for creating and developing this type is based on 4 axiomatic conditions: (1) existence as a fundamental characteristic; (2) a multitude of structural formations; (3) unity, as the relationship between natural technogenic components; (4) sufficiency of the initial material for an assessment of an ecological condition of water environment «NWE - WITC -MWS".

Methodological Bases of Creation and Development of a New Type of Natural and Technical Systems of Multipurpose Water Use in Urban Areas